/Engine/Source/Editor/UnrealEd/Classes/Commandlets/GatherTextCommandletBase.h
Delegate called during a localization gather to allow code to inject new gather and exclude paths for the given localization target
typedef TMulticastDelegate_ThreeParams< void, const [FString](API\Runtime\Core\Containers\FString) &, [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > &, [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & > FGetAdditionalGatherPaths